Natural Entanglement in Bose-Einstein Condensates
量子物理
2009-11-07 v1 凝聚态物理
摘要
Every Bose-Einstein condensate is in a highly entangled state, as a consequence of the fact that the particles in a condensate are distributed over space in a coherent way. It is proved that any two regions within a condensate of finite particle number are entangled. This entanglement does not depend on the distance between the two regions. Criteria for the presence of entanglement are derived in the context of interference experiments. For separable states there is a trade-off between fluctuations in particle number and interference visibility.
引用
@article{arxiv.quant-ph/0110114,
title = {Natural Entanglement in Bose-Einstein Condensates},
author = {Christoph Simon},
journal= {arXiv preprint arXiv:quant-ph/0110114},
year = {2009}
}
备注
4 pages